gas/config/tc-z80.h

   1 /* this is tc-z80.h
   2    Copyright (C) 2005-2020 Free Software Foundation, Inc.
   3
   4    Contributed by Arnold Metselaar <arnold_m@operamail.com>
   5
   6    This file is part of GAS, the GNU Assembler.
   7
   8    GAS is free software; you can redistribute it and/or modify
   9    it under the terms of .the GNU General Public License as published by
  10    the Free Software Foundation; either version 3, or (at your option)
  11    any later version.
  12
  13    GAS is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with GAS; see the file COPYING.  If not, write to the Free
  20    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
  21    02110-1301, USA.  */
  22
  23 #ifndef TC_Z80
  24 #define TC_Z80
  25
  26 #define TARGET_ARCH   bfd_arch_z80
  27 #ifndef OBJ_COFF
  28 #define TARGET_FORMAT "elf32-z80"
  29 #endif
  30 #define BFD_ARCH      TARGET_ARCH
  31 #define COFF_MAGIC    0x5A80
  32 #define TARGET_BYTES_BIG_ENDIAN  0
  33
  34 /* If you define this macro, GAS will warn about the
  35    use of nonstandard escape sequences in a string.  */
  36 #define ONLY_STANDARD_ESCAPES
  37
  38 /* GAS will call this function for any expression that can not be
  39    recognized.  When the function is called, `input_line_pointer'
  40    will point to the start of the expression.  */
  41 #define md_operand(x)
  42
  43 /* This should just call either `number_to_chars_bigendian' or
  44    `number_to_chars_littleendian', whichever is appropriate.  On
  45    targets like the MIPS which support options to change the
  46    endianness, which function to call is a runtime decision.  On
  47    other targets, `md_number_to_chars' can be a simple macro.  */
  48 #define md_number_to_chars number_to_chars_littleendian
  49
  50 #define TC_COUNT_RELOC(x) 1
  51
  52 #define TC_COFF_FIX2RTYPE(fixP) tc_coff_fix2rtype (fixP)
  53 #define md_convert_frag(b,s,f)   as_fatal ("convert_frag called\n")
  54 #define md_estimate_size_before_relax(f,s) \
  55   (as_fatal (_("estimate_size_before_relax called")), 1)
  56
  57 /* Define some functions to be called by generic code.  */
  58 #define md_end               z80_md_end
  59 #define md_start_line_hook() { if (z80_start_line_hook ()) continue; }
  60 #define TC_CONS_FIX_NEW(f,w,s,e,r)  z80_cons_fix_new ((f), (w), (s), (e))
  61
  62 extern void z80_md_end (void);
  63 extern int z80_start_line_hook (void);
  64 extern void z80_cons_fix_new (fragS *, int, int, expressionS *);
  65
  66 #define WORKING_DOT_WORD
  67
  68 /* If you define this macro, it means that `tc_gen_reloc' may return
  69    multiple relocation entries for a single fixup.  In this case, the
  70    return value of `tc_gen_reloc' is a pointer to a null terminated
  71    array.  */
  72 #undef RELOC_EXPANSION_POSSIBLE
  73
  74 /* No shared lib support, so we don't need to ensure
  75    externally visible symbols can be overridden.  */
  76 #define EXTERN_FORCE_RELOC 0
  77
  78 /* Values passed to md_apply_fix3 don't include the symbol value.  */
  79 #define MD_APPLY_SYM_VALUE(FIX) 0
  80
  81 #define LISTING_WORD_SIZE 1
  82
  83 /* A single '=' is accepted as a comparison operator.  */
  84 #define O_SINGLE_EQ O_eq
  85
  86 /* A '$' is used to refer to the current location or as a hex. prefix.  */
  87 #define DOLLAR_DOT
  88 #define DOLLAR_AMBIGU                1
  89 #define LOCAL_LABEL_PREFIX           '.'
  90 #define LOCAL_LABELS_FB              1
  91 #define LOCAL_LABELS_DOLLAR          1
  92 #define LITERAL_PREFIXPERCENT_BIN
  93 #define NUMBERS_WITH_SUFFIX          1
  94 #define NO_PSEUDO_DOT                1
  95 /* We allow single quotes to delimit character constants as
  96    well, but it is cleaner to handle that in tc-z80.c.  */
  97 #define SINGLE_QUOTE_STRINGS
  98
  99 /* An `.lcomm' directive with no explicit alignment parameter will
 100    use this macro to set P2VAR to the alignment that a request for
 101    SIZE bytes will have.  The alignment is expressed as a power of
 102    two.  If no alignment should take place, the macro definition
 103    should do nothing.  Some targets define a `.bss' directive that is
 104    also affected by this macro.  The default definition will set
 105    P2VAR to the truncated power of two of sizes up to eight bytes.  */
 106 #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) (P2VAR) = 0
 107
 108 /* It does not make any sense to perform arithmetic on the numbers
 109    we use to identify registers.  */
 110 #define md_register_arithmetic 0
 111
 112 #define TC_LABEL_IS_LOCAL z80_tc_label_is_local
 113 extern int z80_tc_label_is_local (const char *name);
 114
 115 #define elf_tc_final_processing z80_elf_final_processing
 116 extern void z80_elf_final_processing (void);
 117
 118 /* Define the column that represents the PC.  */
 119 #define DWARF2_DEFAULT_RETURN_COLUMN    5
 120
 121 /* The stack grows down, and is only byte aligned.  */
 122 #define DWARF2_CIE_DATA_ALIGNMENT       -1
 123
 124 /* Z80 instructions are 1 or 4 bytes long.  */
 125 #define DWARF2_LINE_MIN_INSN_LENGTH     1
 126
 127 /* 16 bits addresses are used on Z80.  */
 128 #define DWARF2_ADDR_SIZE(bfd)           z80_dwarf2_addr_size(bfd)
 129 extern int z80_dwarf2_addr_size (const bfd *abfd);
 130
 131 /* CFI hooks.  */
 132 #define tc_cfi_frame_initial_instructions z80_tc_frame_initial_instructions
 133 extern void z80_tc_frame_initial_instructions (void);
 134
 135 #define tc_regname_to_dw2regnum z80_tc_regname_to_dw2regnum
 136 extern int z80_tc_regname_to_dw2regnum (const char *regname);
 137
 138 #endif